hurrah! yay! I made it! (an interjection expressing approval, appreciation, or happiness.)

past tense of やる

past of や (ya): (dialect) was

弥太郎: a male given name

volitional form of やる (yaru) [godan]

volitional form of や (ya, “is, are”)

(archaic, dialect) “isn't it?” / (archaic, dialect) expresses uncertainty or indefiniteness

(informal, colloquial, slang) not do

槍: spear

stem or continuative form of やる (yaru) [godan]